It's strange the way things work for different people. I don't have a clue because it is working the opposite for me with laying down and being able to get enough oxygen. I guess we aren't meant to understand, Except for the doctors who should be able to answer your questions and have faith that things will happen the way our future dictates. I am playing the waiting game myself and trying to be patient while waiting for answers. It sure isn't easy, but necessary. So many have been through the same things that we are dealing with. As far as eating, I use the boost energy drink and it helps. It's hard to just have faith, and there are books that explain how to do it, some of us are better at it than others. I hope you find your answers and peace while you wait. Just keep doing like you are doing and keep asking for answers until you find someone who has been through it. Best of luck to you and mom. Take care.